In-fem liquid crystal display panel with a film of cellophane tape

Abstract

A liquid crystal display panel comprises a pair of polarizers, the polarization axes of the polarizers being substantially orthogonal each other, a pair of substrates each supporting an electrode, a film provided between one of the substrates and one of the polarizers, the film having an optical axis inclined to the polarization axis of said one of the polarizers at about 45°, and a liquid crystal material disposed between the substrates, molecules of the liquid crystal material being twisted at about 90° between the surface of the substrates. The panel is adapted to provide a positive type display where the film is not positioned and the panel is adapted to provide a negative type display where the film is positioned.

What is claimed is: 
     
       1. A liquid crystal display panel comprising: a pair of polarizers, the polarization axes of the polarizers being substantially orthogonal each other;   a pair of substrates each supporting an electrode;   a film composed of a cellophane tape provided between one of the substrates and one of the polarizers, the film having an optical axis inclined to the polarization axis of said one of the polarizers at about 45°; and   a liquid crystal material disposed between the substrates, molecules of the liquid crystal material being twisted at about 90° between the surfaces of the substrates.   
     
     
       2. The panel of claim 1, wherein the panel is adapted to provide a positive type display at the position where the film is not positioned and the panel is adapted to provide a negative type display at the position where the film is positioned.